Maintainer	gtk2hs-users@lists.sourceforge.net
Stability	provisional
Portability	portable (depends on GHC)
Safe Haskell	None
Language	Haskell98

Graphics.UI.Gtk.Entry.EntryCompletion

Contents

Detail
Class Hierarchy
Types
Constructors
Methods
Attributes
Signals
Deprecated

Description

Completion functionality for Entry

Module available since Gtk+ version 2.4

Synopsis

Detail

EntryCompletion is an auxiliary object to be used in conjunction with Entry to provide the completion functionality. It implements the CellLayout interface, to allow the user to add extra cells to the TreeView with completion matches.

"Completion functionality" means that when the user modifies the text in the entry, EntryCompletion checks which rows in the model match the current content of the entry, and displays a list of matches. By default, the matching is done by comparing the entry text case-insensitively against the text in a model (see entryCompletionSetTextModel), but this can be overridden with a custom match function (see entryCompletionSetMatchFunc).

When the user selects a completion, the content of the entry is updated. By default, the content of the entry is replaced by the text column of the model, but this can be overridden by connecting to the matchSelected signal and updating the entry in the signal handler. Note that you should return True from the signal handler to suppress the default behaviour.

To add completion functionality to an entry, use entrySetCompletion.

In addition to regular completion matches, which will be inserted into the entry when they are selected, EntryCompletion also allows to display "actions" in the popup window. Their appearance is similar to menu items, to differentiate them clearly from completion strings. When an action is selected, the completionActionActivated signal is emitted.

Class Hierarchy

| GObject
| +----EntryCompletion

Types

data EntryCompletion Source

Instances

Eq EntryCompletion Source
Ord EntryCompletion Source
GObjectClass EntryCompletion Source
EntryCompletionClass EntryCompletion Source

class GObjectClass o => EntryCompletionClass o Source

Instances

EntryCompletionClass EntryCompletion Source

castToEntryCompletion :: GObjectClass obj => obj -> EntryCompletion Source

gTypeEntryCompletion :: GType Source

toEntryCompletion :: EntryCompletionClass o => o -> EntryCompletion Source

Constructors

entryCompletionNew :: IO EntryCompletion Source

Creates a new EntryCompletion object.

Methods

entryCompletionGetEntry Source

Arguments

:: EntryCompletion
-> IO (Maybe Entry)	returns the entry `completion` has been attached to.

Gets the entry completion has been attached to.

entryCompletionSetModel Source

Arguments

:: TreeModelClass model
=> EntryCompletion
-> Maybe model	`model` - The `TreeModel`.
-> IO ()

Sets the model for a EntryCompletion. If completion already has a model set, it will remove it before setting the new model. If model is Nothing, then it will unset the model.

entryCompletionGetModel Source

Arguments

:: EntryCompletion
-> IO (Maybe TreeModel)	returns A `TreeModel`, or `Nothing` if none is currently being used.

Returns the model the EntryCompletion is using as data source. Returns Nothing if the model is unset.

entryCompletionSetTextModel Source

Arguments

:: (TreeModelClass (model string), TypedTreeModelClass model, GlibString string)
=> EntryCompletion	completion
-> model string	the model containing `string`s
-> IO ()

Convenience function for setting up the most used case of this code: a completion list with just strings. This function will set up completion to have a list displaying all (and just) strings in the completion list, and to get those strings from model. This functions creates and adds a CellRendererText which retrieves its content from the given model.

entryCompletionSetMatchFunc :: GlibString string => EntryCompletion -> (string -> TreeIter -> IO Bool) -> IO () Source

Sets the match function for completion to be func. The match function is used to determine if a row should or should not be in the completion list.

The passed-in function decides whether the row indicated by the TreeIter matches a given key, and should be displayed as a possible completion for key. Note that the key is normalized and case-folded. Normalization will standardizing such issues as whether a character with an accent is represented as a base character and combining accent or as a single precomposed character. If this is not appropriate you can extract the original text from the entry.

entryCompletionSetMinimumKeyLength Source

Arguments

:: EntryCompletion
-> Int	`length` - The minimum length of the key in order to start completing.
-> IO ()

Requires the length of the search key for completion to be at least length. This is useful for long lists, where completing using a small key takes a lot of time and will come up with meaningless results anyway (ie, a too large dataset).

entryCompletionGetMinimumKeyLength Source

Arguments

:: EntryCompletion
-> IO Int	returns The currently used minimum key length.

Returns the minimum key length as set for completion.

entryCompletionComplete :: EntryCompletion -> IO () Source

Requests a completion operation, or in other words a refiltering of the current list with completions, using the current key. The completion list view will be updated accordingly.

entryCompletionInsertActionText Source

Arguments

:: GlibString string
=> EntryCompletion
-> Int	`index` - The index of the item to insert.
-> string	`text` - Text of the item to insert.
-> IO ()

Inserts an action in completion's action item list at position index with text text. If you want the action item to have markup, use entryCompletionInsertActionMarkup.

entryCompletionInsertActionMarkup Source

Arguments

:: GlibString string
=> EntryCompletion
-> Int	`index` - The index of the item to insert.
-> string	`markup` - Markup of the item to insert.
-> IO ()

Inserts an action in completion's action item list at position index with markup markup.

entryCompletionDeleteAction Source

Arguments

:: EntryCompletion
-> Int	`index` - The index of the item to Delete.
-> IO ()

Deletes the action at index from completion's action list.

entryCompletionSetTextColumn Source

Arguments

:: GlibString string
=> EntryCompletion
-> ColumnId row string	`column` - The column in the model of `completion` to get strings from.
-> IO ()

Convenience function for setting up the most used case of this code: a completion list with just strings. This function will set up completion to have a list displaying all (and just) strings in the completion list, and to get those strings from column in the model of completion.

This functions creates and adds a CellRendererText for the selected column.

entryCompletionInsertPrefix :: EntryCompletion -> IO () Source

Requests a prefix insertion.

Available since Gtk+ version 2.6

entryCompletionGetTextColumn Source

Arguments

:: GlibString string
=> EntryCompletion
-> IO (ColumnId row string)	returns the column containing the strings

Returns the column in the model of the completion to get strings from.

Available since Gtk+ version 2.6

entryCompletionSetInlineCompletion Source

Arguments

:: EntryCompletion
-> Bool	`inlineCompletion` - `True` to do inline completion
-> IO ()

Sets whether the common prefix of the possible completions should be automatically inserted in the entry.

Available since Gtk+ version 2.6

entryCompletionGetInlineCompletion Source

Arguments

:: EntryCompletion
-> IO Bool	returns `True` if inline completion is turned on

Returns whether the common prefix of the possible completions should be automatically inserted in the entry.

Available since Gtk+ version 2.6

entryCompletionSetPopupCompletion Source

Arguments

:: EntryCompletion
-> Bool	`popupCompletion` - `True` to do popup completion
-> IO ()

Sets whether the completions should be presented in a popup window.

Available since Gtk+ version 2.6

entryCompletionGetPopupCompletion Source

Arguments

:: EntryCompletion
-> IO Bool	returns `True` if popup completion is turned on

Returns whether the completions should be presented in a popup window.

Available since Gtk+ version 2.6

entryCompletionSetPopupSetWidth Source

Arguments

:: EntryCompletion
-> Bool	`popupSetWidth` - `True` to make the width of the popup the same as the entry
-> IO ()

Sets whether the completion popup window will be resized to be the same width as the entry.

Available since Gtk+ version 2.8

entryCompletionGetPopupSetWidth Source

Arguments

:: EntryCompletion
-> IO Bool	returns `True` if the popup window will be resized to the width of the entry

Returns whether the completion popup window will be resized to the width of the entry.

Available since Gtk+ version 2.8

entryCompletionSetPopupSingleMatch Source

Arguments

:: EntryCompletion
-> Bool	`popupSingleMatch` - `True` if the popup should appear even for a single match
-> IO ()

Sets whether the completion popup window will appear even if there is only a single match. You may want to set this to False if you are using inline completion.

Available since Gtk+ version 2.8

entryCompletionGetPopupSingleMatch Source

Arguments

:: EntryCompletion
-> IO Bool	returns `True` if the popup window will appear regardless of the number of matches.

Returns whether the completion popup window will appear even if there is only a single match.

Available since Gtk+ version 2.8

Attributes

entryCompletionModel :: TreeModelClass model => ReadWriteAttr EntryCompletion (Maybe TreeModel) (Maybe model) Source

The model to find matches in.

entryCompletionMinimumKeyLength :: Attr EntryCompletion Int Source

Minimum length of the search key in order to look up matches.

Allowed values: >= 0

Default value: 1

entryCompletionTextColumn :: GlibString string => Attr EntryCompletion (ColumnId row string) Source

The column of the model containing the strings.

Default value: invalidColumnId

entryCompletionInlineCompletion :: Attr EntryCompletion Bool Source

Determines whether the common prefix of the possible completions should be inserted automatically in the entry. Note that this requires text-column to be set, even if you are using a custom match function.

Default value: False

entryCompletionPopupCompletion :: Attr EntryCompletion Bool Source

Determines whether the possible completions should be shown in a popup window.

Default value: True

entryCompletionPopupSetWidth :: Attr EntryCompletion Bool Source

Determines whether the completions popup window will be resized to the width of the entry.

Default value: True

entryCompletionPopupSingleMatch :: Attr EntryCompletion Bool Source

Determines whether the completions popup window will shown for a single possible completion. You probably want to set this to False if you are using inline completion.

Default value: True

Signals

insertPrefix :: (EntryCompletionClass self, GlibString string) => Signal self (string -> IO Bool) Source

Gets emitted when the inline autocompletion is triggered. The default behaviour is to make the entry display the whole prefix and select the newly inserted part.

Applications may connect to this signal in order to insert only a smaller part of the prefix into the entry - e.g. the entry used in the FileChooser inserts only the part of the prefix up to the next '/'.

Available since Gtk+ version 2.6

completionActionActivated :: EntryCompletionClass self => Signal self (Int -> IO ()) Source

Gets emitted when an action is activated.

matchSelected :: EntryCompletionClass self => Signal self (TreeModel -> TreeIter -> IO Bool) Source

Gets emitted when a match from the list is selected. The default behaviour is to replace the contents of the entry with the contents of the text column in the row pointed to by iter.

Detail

Class Hierarchy

Types

Constructors

Methods

Attributes

Signals

Deprecated